/* ═══════════════════════════════════════════
   DRK DIGITAL — SHARED STYLESHEET
   Extracted from inline styles across all pages.
   ═══════════════════════════════════════════ */

/* ── Design Tokens ── */
:root {
  /* Font Stacks */
  --font-display: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-body: 'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* DRK Brand Colors */
  --drk: #e60005;
  --drk-dark: #a51e0f;
  --drk-light: #ff3344;
  --drk-glow: rgba(230, 0, 5, 0.15);
  --drk-glow-strong: rgba(230, 0, 5, 0.25);

  /* DRK Blue (offizielle Sekundärfarben — styleguide.drk.de) */
  --drk-blue: #002d55;
  --drk-blue-mid: #2276d0;
  --drk-blue-light: #ebf5ff;
  --drk-blue-steel: #698caf;
  --drk-blue-glow: rgba(0, 45, 85, 0.15);
  --drk-blue-glow-strong: rgba(0, 45, 85, 0.25);

  /* Surfaces */
  --bg: #f7f5f2;
  --bg-warm: #f3efe9;
  --surface: #ffffff;
  --surface-hover: #fefefe;
  --surface-muted: #f0ece6;

  /* Text */
  --text: #1c1917;
  --text-secondary: #57534e;
  --text-muted: #78716c;
  --text-faint: #a8a29e;

  /* Borders */
  --border: #e7e5e4;
  --border-light: #f5f5f4;
  --border-hover: #d6d3d1;
  --accent-warm: #b91c1c;

  /* Status */
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;
  --warning: #d97706;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;

  /* Info (used by datenschutz, index) */
  --info: #2276d0;
  --info-bg: #ebf5ff;

  /* Type Scale (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.2vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.2vw, 1rem);
  --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2rem);
  --text-2xl: clamp(2rem, 1.4rem + 2.5vw, 3rem);
  --text-3xl: clamp(2.5rem, 1.5rem + 4vw, 4rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.03);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.1), 0 8px 20px rgba(0,0,0,0.05);
  --shadow-glow: 0 0 0 1px var(--drk-glow), 0 4px 20px var(--drk-glow);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition-base: 250ms var(--ease-out);
  --transition-slow: 400ms var(--ease-out);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: var(--text-base);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.15; text-wrap: balance; }
p { text-wrap: pretty; max-width: 68ch; }
a { color: inherit; text-decoration: none; }

::selection {
  background: var(--drk-glow-strong);
  color: var(--text);
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Skip-Link (Accessibility) ── */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--drk); color: #fff;
  padding: 0.75rem 1.25rem; z-index: 200;
  text-decoration: none; font-weight: 600;
  border-radius: 0 0 var(--radius-md) 0;
  font-size: var(--text-sm);
}
.skip-link:focus {
  left: 0;
  outline: 3px solid #fff;
  outline-offset: -3px;
}

/* ── Focus-Visible Styles (Accessibility) ── */
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--drk-blue);
  outline-offset: 2px;
  border-radius: 2px;
}
.header a:focus-visible,
.header button:focus-visible,
.header-nav a:focus-visible,
.header-icon-btn:focus-visible,
.mobile-menu-btn:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 2px;
}

/* ── Container ── */
.container {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 var(--space-6);
}
@media (max-width: 640px) {
  .container { padding: 0 var(--space-4); }
}

/* ═══════════════════════════════════════════
   HEADER — Glassmorphism Sticky
   ═══════════════════════════════════════════ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 45, 85, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: box-shadow var(--transition-base), background var(--transition-base);
}
.header::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--drk) 20%,
    var(--drk) 80%,
    transparent 100%
  );
}
.header--scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,0.15);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.75rem;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 var(--space-6);
}
@media (max-width: 640px) {
  .header-inner { padding: 0 var(--space-4); }
}
.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: #fff;
}
.header-brand img {
  width: 34px;
  height: 34px;
}
.header-brand-text {
  display: flex;
  flex-direction: column;
}
.header-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.2;
}
.header-subtitle {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 500;
  opacity: 0.6;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1.2;
}
@media (max-width: 480px) {
  .header-subtitle { display: none; }
}
.header-back {
  display: flex; align-items: center; gap: var(--space-2);
  color: rgba(255,255,255,0.8); font-size: var(--text-xs);
  font-weight: 500; padding: var(--space-2) var(--space-3);
  border-radius: 9999px; transition: all var(--transition-fast);
}
.header-back:hover {
  color: #fff; background: rgba(255,255,255,0.12);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.header-nav a {
  color: rgba(255,255,255,0.85);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 0.375rem 0.75rem;
  border-radius: 0.375rem;
  transition: all 200ms ease;
  white-space: nowrap;
}
.header-nav a:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}
.header-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  color: rgba(255,255,255,0.8);
  transition: all var(--transition-fast);
}
.header-icon-btn:hover {
  color: #fff;
  background: rgba(255,255,255,0.12);
}
@media (max-width: 768px) {
  .header-nav .nav-link { display: none; }
}

/* Mobile menu */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  color: #fff;
  cursor: pointer;
  background: none;
  border: none;
}
@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }
}
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(0, 32, 64, 0.98);
  backdrop-filter: blur(20px);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.mobile-nav.open { display: flex; flex-direction: column; gap: var(--space-2); }
.mobile-nav a {
  color: rgba(255,255,255,0.9);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}
.mobile-nav a:hover { background: rgba(255,255,255,0.1); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: 600;
  font-size: var(--text-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  min-height: 2.75rem;
  font-family: inherit;
}
.btn-primary {
  background: #fff;
  color: var(--drk-blue);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}
.btn-primary:hover {
  background: #f8f8f8;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  transform: translateY(-1px);
}
.btn-secondary-light {
  background: rgba(255,255,255,0.1);
  color: #fff;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
}
.btn-secondary-light:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.3);
}
.btn-drk {
  background: var(--drk-blue);
  color: #fff;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  box-shadow: 0 2px 12px var(--drk-blue-glow);
}
.btn-drk:hover {
  background: #001a38;
  box-shadow: 0 4px 20px var(--drk-blue-glow-strong);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--text);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--border-hover);
  background: var(--surface-muted);
}
.btn svg { flex-shrink: 0; }

/* ── Content Card ── */
.content-card {
  background: var(--surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.5rem, 3vw, 3rem);
  margin: var(--space-8) auto;
  max-width: 52rem;
}
.content-card h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 1.5rem + 1.25vw, 2.5rem);
  font-weight: 700;
  color: var(--text); margin-bottom: 2rem;
  letter-spacing: -0.01em; line-height: 1.15;
}
.content-section { margin-bottom: var(--space-6); }
.content-section:last-child { margin-bottom: 0; }
.content-section h2 {
  font-family: var(--font-display);
  font-size: 1.25rem; font-weight: 600;
  color: var(--drk-blue); margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}
.content-section p {
  color: var(--text-secondary); line-height: 1.7;
}
.content-section a {
  color: var(--drk-blue-mid); text-decoration: none;
  font-weight: 500; transition: color var(--transition-fast);
}
.content-section a:hover { color: var(--drk-blue); text-decoration: underline; }
.content-section ul {
  color: var(--text-secondary); padding-left: 1.5rem;
  line-height: 1.7;
}
.content-section li { margin-bottom: 0.25rem; }

/* ── Info Box ── */
.info-box {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-6);
  background: linear-gradient(135deg, var(--drk-blue-light), #f0f7ff);
  border: 1px solid rgba(0,45,85,0.06);
  border-left: 4px solid var(--drk-blue);
  border-radius: var(--radius-xl);
}
.info-box-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  background: var(--drk-blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.info-box-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--space-1);
}
.info-box-text {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Footer ── */
.footer {
  background: var(--drk-blue);
  color: #fff;
  padding: 3rem 0 2rem;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}
.footer-cross {
  width: 24px;
  height: 24px;
  opacity: 0.15;
  margin-bottom: 0.5rem;
}
.footer-org {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
}
.footer-kv {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  font-weight: 500;
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
}
.footer-links a {
  transition: color 150ms ease;
}
.footer-links a:hover { color: #fff; }
.footer-heart {
  font-size: 0.6875rem;
  color: rgba(255,255,255,0.3);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 0.5rem;
}
.footer-heart svg {
  width: 12px;
  height: 12px;
}